<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div{
            border: 1px ;
            color: #0AA1ED;
        }
    </style>
</head>
<body>
<div><h1>{{info}}</h1></div>
<script src="vue.min.js"></script>
<script>
    let v = new Vue({
        el:"div",
        data:{
           info:"Hello Vue!"
        }
    })


    setTimeout(function () {
        v.info="改变了！"
    },3000)
</script>
</body>
</html>